Method of making bonded or sintered permanent magnets
- Ames, IA
An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- DOE Contract Number:
- W-7405-ENG-82
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Number(s):
- US 5240513
- Application Number:
- 07/593,943
- OSTI ID:
- 868901
- Country of Publication:
- United States
- Language:
- English
New material for permanent magnets on a base of Nd and Fe (invited)
|
journal | March 1984 |
Permanent magnet materials based on the rare earth-iron-boron tetragonal compounds
|
journal | September 1984 |
Hot‐pressed neodymium‐iron‐boron magnets
|
journal | April 1985 |
The metal injection molding process comes of age
|
journal | August 1989 |
Processing of Neodymium-Iron-Boron melt-spun ribbons to fully dense magnets
|
journal | September 1985 |
Iron‐based rare‐earth magnets (invited)
|
journal | April 1985 |
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Method of making bonded or sintered permanent magnets
Method of making bonded or sintered permanent magnets
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